Ну в мануале не написано. . CHARGING (using charging devices). Sparks can cause explosions especially during and after charging. Only charge off vehicle in a well ventilated area. Disconnect and connect as described in “B”. Only use direct current (DC) automatic regulated chargers. Charge voltage should be 14.4 volts maximum. Follow the charger instructions. With charger not connected to the mains connect (+) cable to (+) battery terminal and (-) cable to (-) battery terminal. Switch on charger from as remote a position as possible. Charging is sufficient to allow battery to be refitted when the voltage has been stable (14.4 volts) for two hours or more. Switch off power supply to charger before disconnecting. If the battery temperature becomes hot to the touch cease charging and seek professional advice. It is important not to create any sparks after charging the battery, as this is the time when the accumulation of explosive gasses is at its maximum. It is recommended that batteries are left for at least 12 Hours after the charge current is switched off.